Method for transmitting information using chaotic signals

H - Electricity – 04 – K

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H04K 1/00 (2006.01) H04L 27/00 (2006.01)

Patent

CA 2416702

The invention relates to transmission of data with spectrum-spreading by means of chaotic signals. The invention makes it possible to develop straight chaotic communication systems, in which data is introduced into a chaotic signal which is generated directly within a bend for data transmission. The aim of the invention is achieved by formation of a broadband data carrier required for transmission with the aid of a chaotic dynamic system whose structure is pre-synthesized in accordance with predetermined characteristics of said data carrier in such a way that the chaotic system in form a broadband data carrier in the form of a chaotic data carrier displaying the requisite spectral characteristics. Modulation of the chaotic data carrier occurs by forming a chaotic radio and optical impulses therefrom having a predetermined duration and predetermined time intervals therebetween with respect to a transmitted data signal. Reception and demodulation on the receiving end is carried out with the aid of the dynamic system co-ordinated in relation to the behaviour thereof with the chaotic dynamic system of the transmission end.

L'invention concerne un procédé de transmission d'informations à spectre élargi, mis en ouvre au moyen de signaux chaotiques. L'invention consiste en des systèmes directs à signaux chaotiques dans lesquels les informations sont injectées dans le signal chaotique, généré directement dans la gamme de transmission des informations; la formation de la porteuse d'informations à bande large, nécessaire à la transmission, est effectuée au moyen d'un système dynamique chaotique dont la structure est préalablement synthétisée selon les caractéristiques établies à l'avance, de manière à ce que ce système dynamique chaotique assure la formation d'une porteuse d'informations à bande large sous la forme d'une porteuse chaotique d'informations ayant les caractéristiques spectrales requises; on module la porteuse chaotique par la formation à partir de la porteuse d'impulsions optiques radio ou optiques chaotiques ayant une durée déterminée et séparés par des intervalles temporels entre ces impulsions, conformément au signal d'informations transmis. La réception et la démodulation du côté récepteur sont effectuées au moyen d'un système dynamique dont le comportement est réglé sur celui du système dynamique chaotique de la partie émettrice.

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